The TE Connectivity 5406203-3 is a shielded RJ45 modular jack, 8P8C (8 position, 8 contact), rated for Cat5 applications. It sits in the 5406203 base series of right-angle, through-hole jacks with EMI finger shielding. The gold-plated phosphor bronze contacts (50.0µin) handle repeated mating cycles in data-com and industrial Ethernet panels.
This matters in industrial environments where variable-frequency drives and switching supplies radiate into the cabling. The Cat5 rating limits the usable bandwidth to 100 MHz — adequate for 100BASE-TX and most building-automation fieldbus networks, but not for Gigabit Ethernet or PoE+ power levels without checking the contact current capacity.
Mounting and PCB Fit
Right-angle orientation with the tab facing down, through-hole solder termination. Four ports in a single row — the 8P8C pinout per port follows the standard wiring; the EMI fingers on the shell need a ground plane connection on the PCB to work as intended.